You'd think that, with the lengths that companies go to find out our personal information, it would be worth a lot more money.

But your Facebook profile is only worth $122 now, according to Forbes - and that value is falling.

After Wall Street did some math, they calculated what they think you personal info is from various social media accounts. Facebook's chunk of your info is worth the most, but it is falling. On Twitter, you are only worth $70, down from $110 during 2013. Your LinkedIn info is only worth $63, down from $84 just three months ago.

What’s driving this shakeout? Social-media companies thought they were on a can’t-miss growth track by pushing up each quarter’s tallies of active users (i.e accounts that have logged in within the past month.) But revenue per user remains fairly small at all sites. As a result, this frenzy of activity is bullish only if investors expect all this commotion to translate into a bonanza of ad dollars, premium services, etc.